<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>行级标签_页面里还有一只猴子</title>
  <style>
    #content {
      display: none;
      text-align: center;
      margin-top: 100px;
      opacity: 0;
      transition: opacity 0.5s ease;
    }
    #content.show {
      display: block;
      opacity: 1;
    }
  </style>
</head>
<body style="background-color: black">
  <div id="content">
    <img src="嘲笑.jpg" alt="图片正在赶来的路上……" title="嘲笑" width="300" height="300"/>
    <p style="color:white">你猜是谁？</p>
    <br>
    <br>
    <a href="../点我点我！.html">点我返回主页面</a>
  </div>
  <script>
    window.addEventListener('load', function() {
      setTimeout(function() {
        document.getElementById('content').classList.add('show');
      }, 5000);
    });
  </script>
</body>
</html>